interface DemoState {
  count: number
}
const state: DemoState = {
  count: 0
}
export default {
  state,
  mutations: {
    increase(state: DemoState) {
      console.log(state)
      state.count++
    },
    decrease(state: DemoState) {
      console.log(state)
      state.count--
    }
  }
}
